CLASS 8 MATHEMATICS CHAPTER 7 ODIA MEDIUM,LINEAR EQUATION IN ONE VARIABLE,ଏକଘାତୀ ସମୀକରଣ,ଅନୁଶୀଳନୀ 7a

A linear equation is an equation of a straight line, written in one variable. The only power of the variable is 1. Linear equations in one variable may take the form a x + b = 0 \displaystyle ax+b=0 ax+b=0 and are solved using basic algebraic operations. ... An identity equation is true for all values of the variable.